I just hope its not the "limited time to get it" kinda thing. That stuff needs to stop.Could be a whole bunch of placeholder stuff changed, or potentially some cinematics (or at least placeholder cinematics) that got added. Also not sure whether all the voicelines were in, those could add a fair bit of stuff.
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Seems like the Sylvanas bow is now legendary quality, so first legendary weapon since Cata I believe, and first (actual) hunter weapon legendary since TBC.
Now the question is just whether it will actually be a legendary dropchance. Seems silly that it would be if you want it in all the different tints, but you never know. I wouldnt completely hate it if Sylvanas drops a regular bow, but with a low chance for the legendary one. Though in that case I would definitely prefer if it was a unique model, even if that just means her old bow from Cata that never became available for transmog.